/*
 * #%L
 * Server
 * %%
 * Copyright (C) 2011 Ractoc.com
 * %%
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * #L%
 */
package com.ractoc.opengamefinder.server.tools;

import com.ractoc.opengamefinder.server.ConfigLocator;
import java.io.File;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.AnnotationConfiguration;
import org.hibernate.cfg.Configuration;

/**
 * Utility class related to hibernate. <p/>
 * <p/>
 * @author ractoc
 * @version 0.1
 */
public final class HibernateUtil {

    private static SessionFactory SESSION_FACTORY = null;

    static {
        String customConfig = ConfigLocator.getCustomConfig("hibernate.cfg.xml");
        Configuration config = null;
        if (customConfig != null) {
            config = new AnnotationConfiguration().configure(new File(customConfig));
        } else {
            config = new AnnotationConfiguration().configure("hibernate.cfg.xml");
        }
        SESSION_FACTORY = config.buildSessionFactory();
    }

    private HibernateUtil() {
    }

    /**
     * Get a hibernate session.
     * 
     * @return the hibernate session
     */
    public static Session getSession() {
        return SESSION_FACTORY.openSession();
    }
}
